Home GPU Comparison AMD Radeon RX 6600 XT vs AMD Radeon RX 550X 640SP

AMD Radeon RX 6600 XT vs AMD Radeon RX 550X 640SP

We compared two Desktop platform GPUs: 8GB VRAM Radeon RX 6600 XT and 2GB VRAM Radeon RX 550X 640SP to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon RX 6600 XT 's Advantages
Released 3 years and 3 months late
Boost Clock has increased by 142% (2589MHz vs 1071MHz)
More VRAM (8GB vs 2GB)
Larger VRAM bandwidth (256.0GB/s vs 96.00GB/s)
1408 additional rendering cores
AMD Radeon RX 550X 640SP 's Advantages
Lower TDP (60W vs 160W)

Score

Benchmark

FP32 (float)
Radeon RX 6600 XT +673%
10.6 TFLOPS
Radeon RX 550X 640SP
1.371 TFLOPS
VS

Graphics Card

Jul 2021
Release Date
Apr 2018
Navi II
Generation
Polaris
Desktop
Type
Desktop
PCIe 4.0 x8
Bus Interface
PCIe 3.0 x8

Clock Speeds

1968 MHz
Base Clock
1019 MHz
2589 MHz
Boost Clock
1071 MHz
2000 MHz
Memory Clock
1500 MHz

Memory

8GB
Memory Size
2GB
GDDR6
Memory Type
GDDR5
128bit
Memory Bus
128bit
256.0GB/s
Bandwidth
96.00GB/s

Render Config

32
Compute Units
10
-
-
-
2048
Shading Units
640
128
TMUs
40
64
ROPs
16
-
-
-
32
RT Cores
-
128 KB per Array
L1 Cache
16 KB (per CU)
2 MB
L2 Cache
1024 KB
32 MB
L3 Cache
-

Theoretical Performance

165.7 GPixel/s
Pixel Rate
17.14 GPixel/s
331.4 GTexel/s
Texture Rate
42.84 GTexel/s
21.21 TFLOPS
FP16 (half)
1371 GFLOPS
10.60 TFLOPS
FP32 (float)
1371 GFLOPS
662.8 GFLOPS
FP64 (double)
85.68 GFLOPS

Board Design

160W
TDP
60W
450 W
Suggested PSU
250 W
1x HDMI 2.1 3x DisplayPort 1.4a
Outputs
1x DVI 1x HDMI 2.0b 1x DisplayPort 1.4a
1x 8-pin
Power Connectors
None

Graphics Processor

Navi 23
GPU Name
Baffin
Navi 23 XT (215-130000006)
GPU Variant
Baffin LE
RDNA 2.0
Architecture
GCN 4.0
TSMC
Foundry
GlobalFoundries
7 nm
Process Size
14 nm
11.06 billion
Transistors
3 billion
237 mm²
Die Size
123 mm²

Graphics Features

12 Ultimate (12_2)
DirectX
12 (12_0)
4.6
OpenGL
4.6
2.1
OpenCL
2.1
1.3
Vulkan
1.2
-
-
-
6.7
Shader Model
6.4

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